Quick demo of getting regions into a world map. Not performant.
-
-
Save milroc/e90cfd6698f9ed318a2c to your computer and use it in GitHub Desktop.
States & Provinces (warning may cause seizures)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: gpl-3.0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| .DS_Store | |
| build | |
| node_modules |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| canvas { | |
| background: #eee; | |
| } | |
| </style> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script src="//d3js.org/topojson.v1.min.js"></script> | |
| <body> | |
| <script> | |
| var width = 960, | |
| height = 960; | |
| var scale, | |
| translate, | |
| area; // minimum area threshold for simplification | |
| var clip = d3.geo.clipExtent() | |
| .extent([[0, 0], [width, height]]); | |
| var simplify = d3.geo.transform({ | |
| point: function(x, y, z) { | |
| if (z >= area) this.stream.point(x * scale + translate[0], y * scale + translate[1]); | |
| } | |
| }); | |
| var zoom = d3.behavior.zoom() | |
| .translate([0, 0]) | |
| .scale(1) | |
| .scaleExtent([1, 8]); | |
| var canvas = d3.select("body").append("canvas") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var context = canvas.node().getContext("2d"); | |
| context.lineJoin = "round"; | |
| context.lineCap = "round"; | |
| var path = d3.geo.path() | |
| .projection({stream: function(s) { return simplify.stream(clip.stream(s)); }}) | |
| .context(context); | |
| d3.json("world.json", function(error, world) { | |
| if (error) throw error; | |
| topojson.presimplify(world); | |
| var sphere = topojson.feature(world, world.objects.sphere), | |
| land = topojson.feature(world, world.objects.land), | |
| boundary = topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }), | |
| provinces = topojson.feature(world, world.objects.provinces); | |
| canvas | |
| .call(zoom.on("zoom", zoomed)) | |
| .call(zoom.event); | |
| function zoomed() { | |
| translate = zoom.translate(); | |
| scale = zoom.scale(); | |
| area = 1 / scale / scale; | |
| context.clearRect(0, 0, width, height); | |
| context.save(); | |
| context.beginPath(); | |
| path(sphere); | |
| context.fillStyle = "#fff"; | |
| context.fill(); | |
| context.beginPath(); | |
| path(land); | |
| context.fillStyle = "#000"; | |
| context.fill(); | |
| context.beginPath(); | |
| path(boundary); | |
| context.strokeStyle = "#f00"; | |
| context.stroke(); | |
| provinces.features.forEach(function(province) { | |
| context.beginPath(); | |
| path(province); | |
| context.fillStyle = d3.rgb(Math.random() * 255, Math.random() * 255, Math.random() * 255).toString(); | |
| context.fill(); | |
| }) | |
| context.restore(); | |
| } | |
| }); | |
| d3.select(self.frameElement).style("height", height + "px"); | |
| </script> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| GENERATED_FILES = \ | |
| world.json | |
| all: $(GENERATED_FILES) | |
| clean: | |
| rm -rf -- %(GENERATED_FILES) | |
| .PHONY: all clean | |
| build/ne_10m_admin_0_countries.zip: | |
| mkdir -p $(dir $@) | |
| curl -o $@ 'http://www.naturalearthdata.com/download/10m/cultural/$(notdir $@)' | |
| build/ne_10m_admin_0_countries.shp: build/ne_10m_admin_0_countries.zip | |
| unzip -d $(dir $@) $< | |
| touch $@ | |
| build/ne_10m_admin_1_states_provinces.zip: | |
| mkdir -p $(dir $@) | |
| curl -o $@ 'http://www.naturalearthdata.com/download/10m/cultural/$(notdir $@)' | |
| build/ne_10m_admin_1_states_provinces.shp: build/ne_10m_admin_1_states_provinces.zip | |
| unzip -d $(dir $@) $< | |
| touch $@ | |
| world.json: build/ne_10m_admin_1_states_provinces.shp build/ne_10m_admin_0_countries.shp sphere.json | |
| node_modules/.bin/topojson \ | |
| -p gn_a1_code -q 1e5 --simplify-proportion 0.1 \ | |
| --projection='width = 960, height = 960, d3.geo.mercator() \ | |
| .translate([width / 2, height / 2]) \ | |
| .scale((width - 1) / 2 / Math.PI)' \ | |
| -- \ | |
| provinces=build/ne_10m_admin_1_states_provinces.shp \ | |
| countries=build/ne_10m_admin_0_countries.shp \ | |
| sphere=sphere.json | \ | |
| node_modules/.bin/topojson-merge \ | |
| --io countries \ | |
| --oo land \ | |
| -o $@ |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| { | |
| "name": "anonymous", | |
| "version": "0.0.1", | |
| "private": true, | |
| "dependencies": { | |
| "topojson": "1" | |
| } | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| { | |
| "type": "Sphere" | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment